/Engine/Source/Runtime/Experimental/ChaosVehicles/ChaosVehiclesCore/Public/SimModule/TorqueSimModule.h
Integrate angular velocity using specified DeltaTime & Inertia value, Note the inertia should be the combined inertia of all the connected pieces otherwise things will rotate at different rates
void IntegrateAngularVelocity ( float DeltaTime, float Inertia, float MaxRotationVel )